Breast Cancer Clinical Trial
Official title:
SURVIVE (Standard Surveillance vs. Intensive Surveillance in Early Breast Cancer) - a Partially Double-blinded, Multi-center, Randomized, Controlled Superiority Study
The goal of this clinical study is to evaluate the potential benefits of intensified surveillance versus standard surveillance in medium-risk and high-risk early breast cancer patients. The main questions it aims to answer are: - Comparison of the 5-year ob´verall survival rates between patients in the Standard Surveillance arm versus patients in the liquid-biopsy guided Intensive Surveillance arm - Determination of the Overall Lead Time Effect generated due to tumor marker/CTC/ctDNA guided Intensive Surveillance compared to Standard Surveillance after primary therapy in early breast cancer patients. Participants will recieve regular blood drawals. Solely the blood samples of the intensive surveillance arm will be analysed for prospective tumor markers/CTCs/ctDNAs. Abnormal findings of either marker will trigger diagnostic imaging to search for possible metastases. The blood samples of the standard surveillance arm will solely be biobanked for future research purposes.
This is a partially double-blinded, multi-center, randomized, controlled superiority study to evaluate the potential benefits of intensified surveillance versus standard surveillance in medium-risk and high-risk early breast cancer patients. 3500 patients will be enrolled after completion of primary anti-tumor therapy (adjuvant chemotherapy, surgery or radiotherapy, whichever occurs last) and randomized in a 1:1 ratio to receive: - Standard Surveillance according to national guidelines or - Intensive Surveillance with additional testing of blood samples for prospective tumor markers (CA27.29, CA125, CEA), CTC and ctDNA In both study arms patients will receive standard surveillance according to national guidelines, including clinical follow-up visits every 3 months for the first 3 years and every 6 months for the following 2 years. Additionally, blood samples will be drawn and Quality of Life (QoL) will be analyzed at these clinical follow-up visits in both arms. In the Standard Surveillance arm blood samples will be stored in a biobank. In the Intensive Surveillance arm blood samples will be tested for prospective tumor markers (CA27.29, CA125, CEA), CTCs and ctDNA. Abnormal findings of either marker (CA27.29 or CA125 or CEA or CTC or ctDNA) will trigger diagnostic imaging. Additionally, blood samples will be stored in a biobank for retrospective analysis. In both study arms detection of distant recurrence will terminate the surveillance protocol and treatment will be initiated according to national guidelines. Planned enrollment period is approximately 24 months, total study duration is approximately 144 months (2-year recruitment period, 5-year interventional period, 5-year follow up period). In terms of long-term follow-up after end of study, patients have the possibility to participate in the patient self-reporting registry (Patientenselbstauskunft). ;
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